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ATI Inc. insider trading

This tab shows only the shares insiders bought or sold on the open market in the last twelve months (Form 4 codes P and S). Grants, option exercises, shares held back for tax and gifts are left out on purpose, so what is left is insiders trading at the market price like anyone else.

In the last twelve months insiders at ATI Inc. filed 57 open-market sales worth $86.2 million and 0 open-market purchases, on Form 4 with the SEC. The latest: Harris Timothy J, Senior VP and CDIO, sold 9,000 shares at $191.82 on 21 September 2026, filed 23 September 2026.

TradedInsiderRoleTypeSharesPriceValueFiling
21 September 2026Harris Timothy JSenior VP and CDIOSale9,000$191.82$1.7 millionForm 4
14 September 2026Harris Timothy JSenior VP and CDIOSale16,500$193.06$3.2 millionForm 4
8 September 2026Harris Timothy JSenior VP and CDIOSale16,500$207.54$3.4 millionForm 4
2 September 2026Morehouse David JDirectorSale2,485$201.61$501,001Form 4
31 August 2026Harris Timothy JSenior VP and CDIOSale16,500$210.01$3.5 millionForm 4
24 August 2026Harris Timothy JSenior VP and CDIOSale16,500$206.92$3.4 millionForm 4
17 August 2026Fields Kimberly AChair, President and CEOSale1,000$228.32$228,320Form 4
17 August 2026Fields Kimberly AChair, President and CEOSale2,000$229.56$459,120Form 4
17 August 2026Fields Kimberly AChair, President and CEOSale8,131$230.66$1.9 millionForm 4
17 August 2026Fields Kimberly AChair, President and CEOSale9,116$231.72$2.1 millionForm 4
17 August 2026Fields Kimberly AChair, President and CEOSale4,598$232.43$1.1 millionForm 4
28 July 2026Fields Kimberly AChair, President and CEOSale31,757$190.99$6.1 millionForm 4
7 July 2026Fields Kimberly AChair, President and CEOSale2,000$179.25$358,500Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale2,000$180.00$360,000Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale200$180.85$36,170Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale2,200$181.36$398,992Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale11,826$182.66$2.2 millionForm 4
7 July 2026Fields Kimberly AChair, President and CEOSale15,908$183.50$2.9 millionForm 4
7 July 2026Fields Kimberly AChair, President and CEOSale4,878$184.34$899,211Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale388$185.10$71,819Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale200$186.36$37,272Form 4
7 July 2026Fields Kimberly AChair, President and CEOSale400$187.50$75,000Form 4
24 June 2026Fields Kimberly AChair, President and CEOSale3,783$197.21$746,045Form 4
23 June 2026Fields Kimberly AChair, President and CEOSale3,641$197.48$719,025Form 4
22 June 2026Fields Kimberly AChair, President and CEOSale13,269$202.48$2.7 millionForm 4
2 June 2026Fields Kimberly AChair, President and CEOSale25,823$177.97$4.6 millionForm 4
2 June 2026Fields Kimberly AChair, President and CEOSale13,865$179.05$2.5 millionForm 4
2 June 2026Fields Kimberly AChair, President and CEOSale13,164$179.71$2.4 millionForm 4
2 June 2026Fields Kimberly AChair, President and CEOSale1,896$180.80$342,797Form 4
2 June 2026Fields Kimberly AChair, President and CEOSale2,000$181.90$363,800Form 4
2 June 2026Fields Kimberly AChair, President and CEOSale3,001$182.75$548,433Form 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale1,300$154.02$200,226Form 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale5,568$156.29$870,223Form 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale3,350$157.51$527,658Form 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale6,420$158.38$1.0 millionForm 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale2,600$159.38$414,388Form 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale11,982$160.60$1.9 millionForm 4
11 May 2026Fields Kimberly APresident, CEO and DirectorSale8,780$161.12$1.4 millionForm 4
9 March 2026Morehouse David JDirectorSale1,285$153.11$196,746Form 4
9 March 2026Morehouse David JDirectorSale5,324$154.53$822,718Form 4
17 February 2026Wetherbee Robert SExecutive ChairmanSale12,435$144.01$1.8 millionForm 4
17 February 2026Wetherbee Robert SExecutive ChairmanSale8,403$145.17$1.2 millionForm 4
17 February 2026Wetherbee Robert SExecutive ChairmanSale28,724$146.07$4.2 millionForm 4
10 February 2026Wetherbee Robert SExecutive ChairmanSale10,438$146.67$1.5 millionForm 4
18 December 2025Wetherbee Robert SExecutive ChairmanSale6,507$108.86$708,352Form 4
18 December 2025Wetherbee Robert SExecutive ChairmanSale47,355$109.57$5.2 millionForm 4
18 December 2025Wetherbee Robert SExecutive ChairmanSale6,158$110.34$679,474Form 4
25 November 2025Harris Timothy JSenior VP and CDIOSale10,542$97.88$1.0 millionForm 4
21 November 2025Busch Tina KilloughSVP, CHROSale2,598$93.26$242,289Form 4
18 November 2025Wetherbee Robert SExecutive ChairmanSale8,291$97.20$805,885Form 4
18 November 2025Wetherbee Robert SExecutive ChairmanSale24,711$98.21$2.4 millionForm 4
18 November 2025Wetherbee Robert SExecutive ChairmanSale26,998$98.80$2.7 millionForm 4
18 November 2025Harris Timothy JSenior VP and CDIOSale10,542$97.77$1.0 millionForm 4
11 November 2025Harris Timothy JSenior VP and CDIOSale10,543$97.69$1.0 millionForm 4
4 November 2025Harris Timothy JSenior VP and CDIOSale10,543$96.07$1.0 millionForm 4
15 October 2025Fields Kimberly APresident, CEO and DirectorSale21,153$85.87$1.8 millionForm 4
6 October 2025Fields Kimberly APresident, CEO and DirectorSale21,154$82.03$1.7 millionForm 4

A filing with several lines appears once per line.

Source

Form 4 filings on EDGAR for ATI Inc.: the company's filing index.

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